So how can we undo being deceived and being ignorant of the Scriptures?

Mt 11:25 ¶ At that time Jesus answered and said, I thank thee, O Father, Lord of heaven and earth, because thou hast hid these things from the wise and prudent, and hast revealed them unto babes.

Notice to the so called wise and learned, the Scriptures are hidden, and revealed only to those of "child like seeking".

1Co 3:1 ¶ And I, brethren, could not speak unto you as unto spiritual, but as "fleshy", even as unto babes in Christ.

2 I have fed you with milk, and not with meat: for hitherto ye were not able to bear it, neither yet now are ye able.

3 For ye are yet "fleshy": for whereas there is among you envying, and strife, and divisions, are ye not "flesh", and walk as men?

Notice Paul says when we first come to Jesus, many of us remain with our fleshy nature as babes in Christ.
So what is there inside of our old fleshy nature that makes us act this way ? It is our Baal master human powers of self.

Why doesn't Paul speak Baal master powers ?

The Old Testament Torah scripture teachings is well known to Paul. It was the only teachings Paul and Jesus had access to. The latter rain of the testimonies of Jesus in the New Testament, add onto the former rains, so one does not have to repeat themes unnecessarily.
Paul does not want to discourage child like seekers of Jesus either, so uses other experiences they need to develop.

Ro 11:4 But what saith the answer of God unto him? I have reserved to myself seven thousand men, who have not bowed the knee to the image of Baal.

5 Even so then at this present time also there is a remnant according to the election of grace.

6 And if by grace, then is it no more of works: otherwise grace is no more grace. But if it be of works, then is it no more grace: otherwise work is no more work. (KJV)

In this passage, Paul aligns "Baal master powers of self" with the Hebrew term "works of the torah-teachings", rather than the "beauty (grace) of Jesus from the torah-teachings".
The difference is how one obtains power flow from the teachings, from "human power alone" known as legalism, or from "supporting Jesus", known as Christian Faith.

And if you do not understand, about how to "support Jesus" your "faith" becomes blind, your eyes close, and your ears do not hear Jesus speaking to you. (Romans 11:7,8)

(1) When Elijah thought that he was alone, God said to him, "I have reserved to Myself seven thousand men, who have not bowed to the image of Baal." We believe that God has reserved to Himself a multitude of precious souls, some even in the churches. These He will manifest in His own time. They were living up to what light they had when Jesus closed His mediation for the world, and when they hear the voice of the Shepherd in the message of the third angel they will gladly receive the whole truth. Such will be converted to the truth, and from their errors. But we think we have no message to such now, still "he that hath an ear to hear let him hear." Our message is to the Laodiceans, yet some of these hidden souls are being manifested.--Review and Herald, April 7, 1851

(2) Principle, right, honesty, should ever be cherished. Honesty will not tarry where policy is harbored. They will never agree; one is of Baal, the other of God. The Master requires His servants to be honorable in motive and action. . . . Those who choose honesty as their companion will embody it in all their acts. To a large class, these men are not pleasing, but to God they are beautiful. From Maranatha - Page 229

These are probably the only good quotes regarding the SOP who also does not speak much about "Baal master powers of self". Why does the SOP use "the Master" because the Hebrew word "Baal" means "master", we ourselves cannot be "masters", we must allow Jesus to be our "Master", when we support His words and His power flow in our lives.

Re 2:14 But I have a few things against thee, because thou hast there them that hold the doctrine of Balaam, who taught Balac to cast a stumblingblock before the children of Israel, to eat things sacrificed unto idols, and to commit fornication.

15 So hast thou also them that hold the doctrine of the Nicolaitans, which thing I hate.

16 Repent; or else I will come unto thee quickly, and will fight against them with the sword of my mouth.

17 He that hath an ear, let him hear what the Spirit saith unto the churches; To him that overcometh will I give to eat of the hidden manna(man) "man",...(KJV)

Notice "Jesus is the hidden man ", people prefer to use their own "master powers", not support the words of Jesus, as a "yoked power flow" in their lives.
So the latter rain is hidden from those who seek, unless you read also first the former rains, and add the special messages together.

When did "legalism" first start? When did people use their own "baal master powers of self" to follow the "Torah-Teachings"?

Ex 19:8 And all the people answered together, and said, All that the LORD hath spoken we will do..

The practiced legalism as soon as they were "Saved by Jesus in the Exodus". Notice these special writings, translated correctly:-

Romans 3:27 Where is boasting then? It is excluded. By what teachings? or doings? Nay: but by the teachings of support.(Ancient Hebrew)

Rom 9:32 Wherefore? Because they sought it not by support, but as it were by the doings of the teachings. For they stumbled at that stumblingstone (Jesus);

Ga 2:16 Knowing that a man is not straightened by the doings of the teachings, but by the support of Jesus Christ, even we have supported Jesus Christ, that we might be straightened by the support of Christ, and not by the doings of the teachings: for by the doings of the teachings shall no flesh be straightened.

Ga 3:2 This only would I learn of you, Received ye the Holy Spirit by the doings of the teachings, or by the hearing of support?

Ga 3:10 For as many as are of the doings of the teachings are under the curse: for it is written, Cursed is every one that continueth not in all things which are written in the scrolls of the teachings to do them. (Ancient Hebrew)

Following the teachings of Jesus, ceasing on Sabbath, waiting for the Second Coming, does not save you, and you do not know Jesus, and Jesus does not know you. Why? Because there is no daily flow of Jesus power flowing in our life.
How do we achieve this flow of power from Jesus? By daily supporting His words, so Jesus daily supports us. We are yoked together with Jesus, we are trained daily to share in the burdens of Jesus, and praise Him for our burdens are easy and light. When an older more experienced oxen is yoked to a less experienced immature oxen, the yoking process causes more of the load to be transferred to the stronger more experienced one, and less load to the inexperienced weaker one.

Mt 11:29 Take my yoke upon you, and learn of me; for I am meek and lowly in heart: and ye shall find rest unto your souls.

30 For my yoke is easy, and my burden is light. (KJV)

Jas 2:17 Even so support, if it hath not doings, is dead, being alone.

18 Yea, a man may say, Thou hast support, and I have doings: shew me thy support without thy doings, and I will shew thee my support by my doings. (Ancient Hebrew)

When you support Jesus, by speaking His words, hoping for His power flow in your life, there must be doings associated with the "support" otherwise the "support is dead".

The Author personally knew of young missionary boys supporting Satan with words to Satan, so the young lads could win a soccer match played on Sunday.
Why didn't they support the Holy Spirit, during a soccer match? Because they knew GOD would not help them win the competition. And they are right, GOD would not help them win.
So the youth supported Satan instead.

Jas 2:19 Thou "support" that there is one God; thou doest well: the devils also "support", and tremble. (Ancient Hebrew)

Jas 2:26 For as the body without the Holy Spirit is dead, so "Support" without "doings" is dead also.

The body is alive by the power flow of GOD via the Holy Spirit, is a simile to a follower of Jesus, who is living with Jesus power flowing through him or her, via the Holy Spirit.
And when you support Jesus, and Jesus supports you, thus; there is a "yoke of doing" in your life. The relationship walks and talks and does things as Jesus once did personally on earth to those who came to Him.

There are five objects in this image. The Father, Jesus and the Holy Spirit, you and the soil. The soil is the part of you God wishes to change, by giving you "Divine Relationship doings". Shalom

Paul is familiar with the "Salvational steps to Jesus" in the Scroll of Jesus in the Old Testament, for he adds this in the end of Hebrews: the same salvational steps to Jesus:-

Heb 13:15 By him therefore let us offer the sacrifice of praise to God continually, that is, the fruit of our lips giving thanks to his name.

16 But to do good and to communicate (koinonia) forget not: for with such sacrifices God is well pleased.(KJV)

The Greek word "koinonia" is translated poorly. How do we know this? By simply reading all the contexts of koinonia we find the word means "relationship" or "partnership" for all contexts.

So Paul is actually saying:-

Heb 13:15 By him therefore let us offer the sacrifice of praise to God continually, that is, the fruit of our lips giving thanks to his name.

16 But with well doing relationship(koinonia) forget not: for with such sacrifices God is well pleased.(Ancient Hebrew)

So when we support Jesus with His words, and Jesus supports us with His power, who owns the "doings"? Nobody does. The doings are a result of Relationship !
This is why you become a valued witness for GOD because when you support Jesus and Jesus supports us, the "yoked doings" show "divine relationship" fully restored.
Satan hates this kind of relationship, for it proves you and Jesus can be yoked together for eternity in relationship.

Revelation 3:14 ...These things saith the "Supporter, the supporting" and true witness, the beginning of the creation of Elohiym;

16 So then because thou art lukewarm, and neither cold nor hot, I will spue thee out of my mouth.

So what makes us lukewarm as followers of Jesus? It is the power flow from Jesus, and the power flow from ourselves as masters of our own lives. We hop from one Master to another master.
We do this daily or weekly, making our following of Jesus as lukewarm, rather than hot or cold. Do not dispair, Peter was told also to hop over to Jesus as Master of his life:-

All of the disciples for years hopped between Jesus as their Master and themselves as their master. In a sense it is natural in our old nature to empower our lives this way.
The difference between a "Stiff neck" or a "Pious person" and "Child like person" of Jesus, is your pride and willingness to be trained by Jesus throughout the years of our life.
The poor translation suggests Peter was converted twice, once when Jesus called him and once when he is truely sorry for letting Jesus down. But the Hebrew doesn't say that. Peter finally allowed his Baal master powers of self to die, and supporting Jesus daily he became yoked to Jesus in relationship.

This is why the Passover Feast is the first process of being saved by Jesus, because we hop over from one master to another master. The Hebrew word "passover" means to "hop".

In a science explanation, following John's simile of light, darkness and the "sin-offering not unto death", the hopping over process is called the focal point in our lives.
The focal point is where rays of light cross over from your old ways of living to a renewed way of living in Jesus. Relationship is a journey of supporting Jesus and He supporting you.

When you play around with a magnifying glass, or a pen and its shadows under a ceiling light, there is far away an object that makes dark shadows, which are records of your sinning unto death.
When you come closer to Jesus and His saving power, the dark shadows go away automatically and you feel like a chief of sinners. You also no longer sin wilfully. Your journey with Jesus reaches a cross over point, where like Peter, we begin a relationship with Jesus that is maintained by our "supporting Jesus' support". Shalom

So for those of us bored, and tired and wanting to follow Jesus more and more, there is hope.
Learn the Science of Salvation, and love the training Jesus offers us.
May we cross over to live in Relationship with Him, may we allow Jesus to subdue our old ways. Shalom